I'm attempting to integrate rundeck with our current foreman environment. Based on the guide "http://theforeman.org/projects/foreman/wiki/Rundeck_Integration" I attempted to use the "Basic setup" method. However, when I browse to the following URL (when testing this URL is changed to reflect my environment)

http://<foremanuser>:<foremanpasswd>@foreman.mydomain.local/hosts?rundeck=true&format=yaml

This returns an HTTP 500 from the server - here is the output from the production log:

Processing HostsController#index to yaml (for 128.206.43.76 at 2011-11-01 08:40:43) [GET]
Parameters: {"format"=>"yaml", "action"=>"index", "controller"=>"hosts", "rundeck"=>"true"}

ActiveRecord::MissingAttributeError (missing attribute: hostgroup_id):
app/controllers/hosts_controller.rb:46:in `index'
app/controllers/hosts_controller.rb:35:in `index'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/rack/request_handler.rb:96:in `process_request'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/abstract_request_handler.rb:513:in `accept_and_process_next_request'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/abstract_request_handler.rb:274:in `main_loop'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/classic_rails/application_spawner.rb:321:in `start_request_handler'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/classic_rails/application_spawner.rb:275:in `send'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/classic_rails/application_spawner.rb:275:in `handle_spawn_application'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/utils.rb:479:in `safe_fork'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/classic_rails/application_spawner.rb:270:in `handle_spawn_application'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/abstract_server.rb:357:in `__send__'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/abstract_server.rb:357:in `server_main_loop'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/abstract_server.rb:206:in `start_synchronously'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/abstract_server.rb:180:in `start'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/classic_rails/application_spawner.rb:149:in `start'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/spawn_manager.rb:219:in `spawn_rails_application'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/abstract_server_collection.rb:132:in `lookup_or_add'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/spawn_manager.rb:214:in `spawn_rails_application'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/abstract_server_collection.rb:82:in `synchronize'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/abstract_server_collection.rb:79:in `synchronize'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/spawn_manager.rb:213:in `spawn_rails_application'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/spawn_manager.rb:132:in `spawn_application'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/spawn_manager.rb:275:in `handle_spawn_application'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/abstract_server.rb:357:in `__send__'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/abstract_server.rb:357:in `server_main_loop'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/lib/phusion_passenger/abstract_server.rb:206:in `start_synchronously'
/usr/lib64/ruby/gems/1.8/gems/passenger-3.0.7/helper-scripts/passenger-spawn-server:99

Rendering /usr/share/foreman/public/500.html (500 Internal Server Error)